Container for asphalts and the like



Nov.5, 1929. I J H,YOUNG 1,734,189

CONTAINER FOR ASPHALTS AND THE LIKE Filed 001. 6. 1926 Patented Nov. 5, 1929 UNITED STATES OFFICE JAMES HOWARD YOUNG, OF PITTSBURGH, PENNSYLVANIA, ASSIGNOR TO K. H. ROB- EBTSON COMPANY, OF PITTSBURGH, PENNSYLVANIA, A. CORPORATION OF PENN- SYLVANIA communal: roa .asrnarxrs AND THE LI E Application filed October 6, 1928. Serial No. 139,890.

This invention relates'to a receptacle or container which is particularly adapted for use as a cooling or storage receptacle for asphalt or other bituminous material.

The object of the invention is to provide a container or receptacle into which molten asphalt or other bituminous material may be drawn directly from the still to be cooled and stored therein and from which the cooled asphalt or bituminous material may be readily removed without destroying the container or breaking up the mass of asphalt.

To this end, the improved receptacle or container comprises a receptacle, preferably a tapered steel drum, having its interior surface free from projections and covered with a layer of lycerine foots. A receptacle or container 0 this construction and which has been provided with the lining of glycerine foots has-been found to be particularly suitable for use as a storage receptacle into which molten asphalt or other bituminous material may be directl drawn to be cooled and stored therein, and rom which the cooled asphalt or bituminous material in solid form and as a one-piece pl'ug" may be readily removed by inverting the receptacle and allowing the asphalt plug to slide out therefrom without necessitating that the receptacle be destroyed. The drawing illustrates a vertical section through the preferred form of container, showing the same filled with asphalt.

It has previously been theusual practice to draw olf molten asphalt and other bituminous material from the stills into wooden barrels for cooling and storage. Then, when it was desired to use the asphalt it was necessary to break up and destroy the barrels in order to remove the hardened asphalt therefrom. It has also been the practice to coat the interior of. asphalt storage receptacles with washes of lime and other inorganic material, and while these inorganic washes have diminished to some extent, the adhesion of the asphalt or bituminous material to the interior of the receptacle, nevertheless the asphalt or bituminous material after having been removed has always contained a coating of the insoluble inorganic material, and as a result, when such asphalt the mineral rubber is objectionable and decreases the utility and value of the mineral rubberfor some purposes.

I have found that a superior receptacle-for storing asphalt and other bituminous material may be produced-by providing a container with an exteriorsurface free from projections and comprising preferably a tapered steel drum with a layer or coating of glycerine foots. Such a container is illustrated in the drawing, which shows a steel drum having tapered side walls free from projections on their inner surface and which is provided on the interior of the sides and bottom thereof with a coating or layer 4 of glycerine foots. The tapered steel drum thus provided with: the lining layer of glycerine foots is shown as containing asphalt or other bituminous material indicated at 6. It has been found that glycerine foots possesses desirable qualities for preventing the adhesion of the molten asphalt or bitumi nous material to the interior of the drum; that it has a higher boiling point than asphalt so that when the molten asphalt is drawn from the still into the drum, the layer of glycerine foots remains as a permanent layer between the asphalt and the Interior of the drum, and the layer is not destroyed by the heat in material.

Glycerine 'foots comprises the residue remaining in the vacuum stills .when glycerine is purified under reduced pressure and is a dark heavy liquid of relatively high boiling point, appreciably higher than the commer-, cial types of asphalt. The viscosity of g1yc'-- the asphalt or bituminous removed from'the drum, such glycerine foots as may adhere to the cake of asphalt or bituminous material does not detract from the utility or value of as halt or bituminous material, when it is wor ed up into various commercial products such as mineral rubber.

By providing a steeldrum with tapering sidewalls free from projections and coating the interior surface of the drum with a layer of fglycerine foots, it has been found possible to draw the molten asphalt or bituminous material into the drum, store it for as long a period as is desired, and when it is desired to remove the solidified cake or plug of asphalt or bituminous material, this may be accomplished by inverting the drum and allowing the cake or plug to slide out therefrom as one piece through the larger end or mouth of the drum. The glycerine foots appears to not only function to prevent adhesion but also serves as a sort of lubricant facilitating withdrawal of the solidified cake of asphalt or bituminous material.

While the preferred embodiment of the invention has been illustrated-and described, it is to be understood that itmay be embodied in other forms within the scope of the following claims. I

What is claimed is 1. A receptacle in which molten asphalt and the like may be stored to form a solid mass or plug when cold and from which the solid plug of cold asphalt may be removed as one piece by inversion of the receptacle, said receptacle comprising a hollow container having its interior surface free from projections I and coated with glycerine foots forming a lubricating layer insoluble in the hot asphalt and non-adhesive to the cold asphalt and x which acts as a. lubricant for the asphalt plug and enables the latter to be slid out of the container by inversion of the latter.

having ,its interior surface free from 2. A receptacle in which molten asphalt and the like may be stored to form a solid mass or plug when cold and from which the solid plug of cold asphalt may be removed as one piece by inversion of the receptacle, said' receptacle comprising a tapered metal drum ect1ons and coated Wlth glycerme foots forming a lubricating layer insoluble in the hot asphalt and non-adhesive to'the cold as phalt and which acts as a lubricant for the asphalt plug and 'enables the latter to he slid out of .the tapered metal drum by inversion of the latter.

'In. testimony whereof, I have signed .my I

name to this specification.

JAMES HOWARD YOUNG. 

